Finding the Fourth Proportional to 171,196.06, 256,654.92 and 71,430.59

Step by Step Solution

1. Step 1: Write the proportion equation
   171,196.06 : 256,654.92 = 71,430.59 : x
2. Step 2: Convert to fraction form
   171,196.06/256,654.92 = 71,430.59/x
3. Step 3: Cross multiply
   171,196.06x = 256,654.92 × 71,430.59
4. Step 4: Simplify right side
   171,196.06x = 18,333,012,362.00
5. Step 5: Solve for x
   x = 18,333,012,362.00/171,196.06
6. Step 6: Final answer
   x = 107,087.82